6c394f5746
Currently we only export "image-block-device" which is the loopback device (/dev/loopX) for the underlying image. This is the device we install grub to (from inside the chroot ...) This is ok for x86, but is insufficient for some platforms like PPC which have a separate boot partition. They do not want to install to the loop device, but do things like dd special ELF files into special boot partitions. The first problem seems to be that in level1/partitioning.py we have a whole bunch of different paths that either call partprobe on the loop device, or kpartx. We have _all_part_devices_exist() that gates the kpartx for unknown reasons. We have detach_loopback() that does not seem to remove losetup created devices. I don't think this does cleanup if it uses kpartx correctly. It is extremley unclear what's going to be mapped where. This moves to us *only* using kpartx to map the partitions of the loop device. We will *not* call partprobe and create the /dev/loopXpN devices and will only have the devicemapper nodes kpartx creates. This seems to be best. Cleanup happens inside partitioning.py. practice. Deeper thinking about this, and more cleanup of the variables will be welcome. This adds "image-block-devices" (note the extra "s") which exports all the block devices with name and path. This is in a string format that can be eval'd to an array (you can't export arrays). This is then used in a follow-on (I0918e8df8797d6dbabf7af618989ab7f79ee9580) to pick the right partition on PPC. Change-Id: If8e33106b4104da2d56d7941ce96ffcb014907bc
198 lines
6.6 KiB
Bash
Executable File
198 lines
6.6 KiB
Bash
Executable File
#!/bin/bash
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# Configure grub. Note that the various conditionals here are to handle
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# different distributions gracefully.
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if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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BOOT_DEV=$IMAGE_BLOCK_DEVICE
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# All available devices, handy for some bootloaders...
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declare -A DEVICES
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eval DEVICES=( $IMAGE_BLOCK_DEVICES )
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function install_extlinux {
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install-packages -m bootloader extlinux
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echo "Installing Extlinux..."
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# Find and install mbr.bin
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for MBR in /usr/share/syslinux/mbr.bin /usr/lib/syslinux/mbr.bin \
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/usr/lib/extlinux/mbr.bin /usr/lib/EXTLINUX/mbr.bin ; do
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if [ -f $MBR ]; then
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break
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fi
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done
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if [ ! -f $MBR ]; then
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echo "mbr.bin (from EXT/SYSLINUX) not found."
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exit 1
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fi
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dd if=$MBR of=$BOOT_DEV
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# Find any pre-created extlinux install directory
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for EXTDIR in /boot/extlinux /boot/syslinux ; do
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if [ -d $EXTDIR ] ; then
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break
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fi
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done
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if [ ! -d $EXTDIR ] ; then
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# No install directory found so default to /boot/syslinux
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EXTDIR=/boot/syslinux
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mkdir -p $EXTDIR
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fi
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# Finally install extlinux
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extlinux --install $EXTDIR
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}
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function install_grub2 {
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# Check for offline installation of grub
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if [ -f "/tmp/grub/install" ] ; then
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source /tmp/grub/install
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elif [[ "$ARCH" =~ "ppc" ]]; then
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install-packages grub-ieee1275
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else
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install-packages -m bootloader grub-pc
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fi
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# XXX: grub-probe on the nbd0/loop0 device returns nothing - workaround, manually
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# specify modules. https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1073731
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GRUBNAME=$(which grub-install) || echo "trying grub2-install"
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if [ -z "$GRUBNAME" ]; then
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GRUBNAME=$(which grub2-install)
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fi
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# If no GRUB2 is found, fallback to extlinux
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if [ -z "$GRUBNAME" ] || [ $($GRUBNAME --version | grep "0.97" | wc -l) -ne 0 ]; then
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echo "No GRUB2 found. Fallback to Extlinux..."
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install_extlinux
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exit 0
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fi
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echo "Installing GRUB2..."
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# We need --force so grub does not fail due to being installed on the
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# root partition of a block device.
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GRUB_OPTS=${GRUB_OPTS:-"--force"}
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# XXX: This is buggy:
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# - --target=i386-pc is invalid for non-i386/amd64 architectures
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# - and for UEFI too.
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# GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
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if [[ ! $GRUB_OPTS == *--target* ]] && [[ $($GRUBNAME --version) =~ ' 2.' ]]; then
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# /sys/ comes from the host machine. If the host machine is using EFI
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# but the image being built doesn't have EFI boot-images installed we
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# should set the --target to use a BIOS-based boot-image.
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#
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# * --target tells grub what's the target platform
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# * the boot images are placed in /usr/lib/grub/<cpu>-<platform>
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# * i386-pc is used for BIOS-based machines
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# http://www.gnu.org/software/grub/manual/grub.html#Installation
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#
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if [ -d /sys/firmware/efi ]; then
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if [ ! -d /usr/lib/grub/*-efi ]; then
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case $ARCH in
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"x86_64"|"amd64")
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GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
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;;
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"i386")
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target=i386-pc
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if [ -e /proc/device-tree ]; then
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for x in /proc/device-tree/*; do
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if [ -e "$x" ]; then
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target="i386-ieee1275"
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fi
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done
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fi
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GRUB_OPTS="$GRUB_OPTS --target=$target"
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;;
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esac
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fi
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fi
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fi
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if [[ "$ARCH" =~ "ppc" ]] ; then
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$GRUBNAME --modules="part_msdos" $GRUB_OPTS $BOOT_DEV --no-nvram
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else
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$GRUBNAME --modules="biosdisk part_msdos" $GRUB_OPTS $BOOT_DEV
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fi
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# This might be better factored out into a per-distro 'install-bootblock'
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# helper.
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if [ -d /boot/grub2 ]; then
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GRUB_CFG=/boot/grub2/grub.cfg
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elif [ -d /boot/grub ]; then
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GRUB_CFG=/boot/grub/grub.cfg
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fi
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# Override the root device to the default label, and disable uuid
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# lookup.
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echo "GRUB_DEVICE=LABEL=${DIB_ROOT_LABEL}" >> /etc/default/grub
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echo 'GRUB_DISABLE_LINUX_UUID=true' >> /etc/default/grub
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echo "GRUB_TIMEOUT=${DIB_GRUB_TIMEOUT:-5}" >>/etc/default/grub
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echo 'GRUB_TERMINAL="serial console"' >>/etc/default/grub
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echo 'GRUB_GFXPAYLOAD_LINUX=text' >>/etc/default/grub
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echo 'GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,115200 no_timer_check"' >>/etc/default/grub
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echo 'GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"' >>/etc/default/grub
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if which grub2-mkconfig >/dev/null; then
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GRUB_MKCONFIG="grub2-mkconfig -o $GRUB_CFG"
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else
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GRUB_MKCONFIG="grub-mkconfig -o $GRUB_CFG"
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fi
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DISTRO_NAME=${DISTRO_NAME:-}
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case $DISTRO_NAME in
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'ubuntu'|'debian')
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sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
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GRUB_MKCONFIG=update-grub
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;;
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'fedora'|'centos7'|'centos')
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echo "GRUB_CMDLINE_LINUX=\"${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"" >>/etc/default/grub
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;;
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'opensuse')
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sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
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;;
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esac
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# os-prober leaks /dev/sda into config file in dual-boot host
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# Disable grub-os-prober to avoid the issue while running
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# grub-mkconfig
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# Setting a flag to track whether the entry is already there in grub config
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PROBER_DISABLED=
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if ! grep -qe "^\s*GRUB_DISABLE_OS_PROBER=true" /etc/default/grub; then
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PROBER_DISABLED=true
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echo 'GRUB_DISABLE_OS_PROBER=true' >> /etc/default/grub
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fi
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$GRUB_MKCONFIG
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# Remove the fix to disable os_prober
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if [ -n "$PROBER_DISABLED" ]; then
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sed -i '$d' /etc/default/grub
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fi
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# grub-mkconfig generates a config with the device in it,
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# This shouldn't be needed, but old code has bugs
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DIB_RELEASE=${DIB_RELEASE:-}
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if [ "$DIB_RELEASE" = 'wheezy' ]; then
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sed -i "s%search --no.*%%" $GRUB_CFG
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sed -i "s%set root=.*%set root=(hd0,1)%" $GRUB_CFG
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fi
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# Fix efi specific instructions in grub config file
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if [ -d /sys/firmware/efi ]; then
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sed -i 's%\(initrd\|linux\)efi /boot%\1 /boot%g' $GRUB_CFG
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fi
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}
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DIB_EXTLINUX=${DIB_EXTLINUX:-0}
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if [ "$DIB_EXTLINUX" != "0" ]; then
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install_extlinux
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else
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install_grub2
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fi
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